HW03_03

using System;

namespace HW03_03
{
    class Program
    {
        public static void Main(string[] args)
        {
            Question();
        }

        public static void Question()
        {
            string Books1;
            Console.WriteLine("How many books did you get?");
            Books1 = Console.ReadLine();

            int Books = int.Parse(Books1);

            if (6 <= Books)
            {
                Console.WriteLine("Maxiumum number of books is 5!");
                Question();
            }

            Console.WriteLine("For how many days?");
            string Days1 = Console.ReadLine();
            int Days = int.Parse(Days1);

            double Fine = FineAmount(Days);
            Console.WriteLine("Your Fine is: $"+ Fine);


        }


        public static double FineAmount(int Days)
        {
            double Fine = 0;
            double Fine1;

            while (22 >= Days)
            {
                Fine = 0;
            }
            while (22 <= Days && 31 >= Days)
            {
                Fine1 = Days - 21;
                Fine = Fine1 * 0.5;
            }
            while (31 <= Days)
            {
                Fine1 = Days - 21;
                Fine = Fine1 * 0.8;
            }

            return Fine;
        }
    }
}